Returns

Since

Overrides

Returns

array

of the specificities:
'select_items_options_1' Base options for item_1 select
'select_items_options_2' Base options for item_2 select
'can_remove_all_at_once' Is it possible to remove all links at once ?
'only_remove_all_at_once' Do we only allow to remove all links at once ?
(implies 'can_remove_all_at_once')
'itemtypes' array of kind of items in case of itemtype as one item
'button_labels' array of the labels of the button indexed by the action name
'normalized' array('add', 'remove') of arrays containing each action
'check_both_items_if_same_type' to check if the link already exists, also care of both
items are of the same type, then switch them
'can_link_several_times' Is it possible to link items several times ?
'update_id_different' Do we update the link if it already exists (not used in case
of 'can_link_several_times')